2021 is now one of the 10 wettest years on record since 1872 in the Denver area, with almost 10.5 inches of rain having fallen since the start of the year, according to the National Weather Service. That's more than half what the city gets on average in an entire year (14.3 inches annually) and more rain than Denver received in all of 2020 (8.74 inches), making it the wettest year since 1983 (10.5 inches).